CN102123250B - Adjustable color mixing method based on pixel and system - Google Patents

Adjustable color mixing method based on pixel and system Download PDF

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Publication number
CN102123250B
CN102123250B CN201110048892.9A CN201110048892A CN102123250B CN 102123250 B CN102123250 B CN 102123250B CN 201110048892 A CN201110048892 A CN 201110048892A CN 102123250 B CN102123250 B CN 102123250B
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pixel
mixed proportion
pixel value
image
value
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CN102123250A (en
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邱安德
林俐诚
王俊翔
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Via Technologies Inc
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Via Technologies Inc
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/012—Conversion between an interlaced and a progressive signal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/60—Memory management
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
    • G10H1/0041—Recording/reproducing or transmission of music for electrophonic musical instruments in coded form
    • G10H1/0058—Transmission between separate instruments or between individual components of a musical system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/265—Mixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
    • H04N7/014—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes involving the use of motion vectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/10—Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/363—Graphics controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/144—Movement detection
    • H04N5/145—Movement estimation

Abstract

The present invention relates to a kind of adjustable color mixing method based on pixel, comprise the following steps: first, obtain one first according to one first index value and carry out source pixel value, and according to this first come source pixel value obtain one first mixed proportion, then according to this first contribution calcutation one second mixed proportion, then source pixel value and corresponding mixed proportion is come according to these, calculate an output pixel, so, can very flexiblely exporting on picture and the colour mixture overlapping with image sources by two different images, to produce multiple display effect.

Description

Adjustable color mixing method based on pixel and system
The divisional application that the application is the applying date is on May 24th, 2004, application number is 200410045772.3, denomination of invention is the application of " the adjustable color mixing method based on pixel and system ".
Technical field
The present invention relates to the method for superposition of a kind of image and image, particularly apply a kind of image and image method of superposition of the adjustable colour mixture mode based on pixel.
Background technology
In dynamic image frame display, be generally used for the method integrated with show image and image and be respectively free hand drawing width buffer architecture and digraph width buffer architecture.Wherein, digraph width buffer architecture be the respective independent map sheet buffering area of mixing two to show each pixel, and image subsystem and image subsystems distinctly process with a map sheet buffering area.Because the pixel stream of two subsystems (pixel stream) is being carried out all simultaneously, therefore can be regarded as image pixel and overlap under image pixel, therefore when determining not show some image pixel, the image pixel under it just displays.Digraph width buffer architecture determines the practice of one of both show image or image, generally find out so-called crucial colourity (Chroma keying) in the mode of the particular color item (color entry) inquiring about color contrast table (lookup table), and another kind of method does the detecting of so-called black, namely utilize the principle that black is the most easily detected, and black is also considered as certain crucial colourity.These two kinds of practices are all when detecting particular color (as crucial colourity or black) in the image stream, are considered as by image pixel transparent and allow image visualization.
Because many video-signal systems need to adopt the hybrid mode of image and image to show, therefore mostly adopt show image in the way utilizing crucial colourity or black to detect at specific block.To be that an existing image is overlapping with image show schematic diagram to Fig. 1, display frame 150 is made up of image 100 and image 110, wherein image 100 and image 110 are separately by the pixel relative to the same position in display frame 150, send to one by one at one time, and in image 110, have an overlapping region 120 to fill up with crucial colourity, send in multiplexer 130 process at image pixel stream, check with or without crucial colourity with a detector 140, when detecting, then multiplexer 130 is selected to export with the pixel of image 100, otherwise export with the pixel of image 110.
Though can allow image overlap on image according to above-mentioned method, or image is done with image the effect mixing and reach and have transparency colour mixture (transparency mix/blend) with a certain ratio, such as, when the pixel of a certain particular block exports all to fix 1/4 RGB colour image and to add that the RGB colour of 3/4 image just can overlap or translucent effect, but, the colour mixture of this fixed proportion, slightly dislikes not enough in the application elasticity of dynamic image.Such as wishing can by overlapping region with multiple various colour mixture of transparency in various degree, or accomplish by fuzzy to be fade-in fade-out clearly gradually etc. effect time, above-mentioned overlapping display mode just limits application elasticity.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and defect, a kind of adjustable color mixing method based on pixel is provided, comprise the following steps: first, obtain one first according to one first index value and carry out source pixel value, and according to this first come source pixel value obtain one first mixed proportion; Secondly, according to this first contribution calcutation one second mixed proportion; Then first source pixel value the first mixed proportion is therewith carried out according to this, and a second source pixel value the second mixed proportion therewith, calculate an output pixel.
The present invention reoffers an a kind of colour mixture ratio production method of image processing system, and its step comprises: capture one according to an index value and corresponding carry out source pixel value; And according to this corresponding a part of position carrying out source pixel value, to produce a colour mixture ratio.
The present invention separately provides a kind of image color-mixture device based on pixel, comprising: a colour mixture data generation unit, in order to a part of position of the pixel value according to one image/image sources, to produce a mixed proportion; And a blender, in order to according to the pixel value of these image/image sources and corresponding mixed proportion, to export an object pixel value.
By method and system of the present invention, the pixel mixed proportion that dynamic changes can be obtained in acquisition pixel process, to increase the diversity of the multi input image elasticity that shows overlapping with image and application.
Accompanying drawing explanation
To be that an existing image is overlapping with image show schematic diagram to Fig. 1;
Fig. 2 is a kind of adjustable color mixing method flow chart based on pixel of the present invention;
Fig. 3 is a colour mixture ratio production method of a kind of image processing system of the present invention;
Fig. 4 is a kind of image color-mixture device schematic diagram based on pixel of the present invention;
Fig. 5 A and Fig. 5 B illustrates adjustable color mixing method based on pixel of the present invention and color-mixture device.
Symbol description in figure
100 images
110 images
120 overlapping regions
130 multiplexers
140 detectors
150 display frames
400 colour mixture data generation units
410 multiplexers
420 tables of comparisons
430 filler cells
440 blenders
Embodiment
Some embodiments of the present invention can be described in detail as follows.But except describing in detail, the present invention can also implement in other embodiment widely, and scope of the present invention not circumscribed, it is as the criterion with the scope of claims.
Moreover for providing clearer description and being more readily understood the present invention, in icon, each several part is not drawn according to its relative size, and some size is exaggerated compared with other scale dependent; Incoherent detail section is not also drawn completely, succinct in the hope of icon.
Fig. 2 is a kind of adjustable color mixing method flow chart based on pixel of the present invention, step 200 obtains one first according to one first index value to carry out source pixel value, and according to this first come source pixel value obtain one first mixed proportion, wherein this first mixed proportion can utilize a color entry index value of the searching memory element that the first index value is identical therewith, and deposit to capture this color item first comes source pixel value and the first corresponding mixed proportion; This first corresponding mixed proportion can utilize this first a part of position carrying out source pixel value to form, such as to represent 8 kinds of numerical value of minimum each 1 position composition of RGB colour (RGB color value), and fill up this part position, to reply this first form carrying out source pixel value, also formed worthwhile work one second index value can be utilized to obtain to table look-up, and sequencing dynamically can change numerical value.Step 220 is according to this first contribution calcutation one second mixed proportion, such as, deduct this first mixed proportion in the hope of this second mixed proportion with numerical value 1.Step 240 first carrys out source pixel value the first mixed proportion therewith according to this, and the product summation of a second source pixel value the second mixed proportion therewith, to calculate an output pixel, comprise: first calculate this first mixed proportion and this first carrys out the long-pending of source pixel value, then this first mixed proportion and the difference of 1 and the long-pending of this second source pixel value is calculated, then each long-pending described summation is calculated, using as this output pixel.One to carry at this, the summation of above-mentioned mixed proportion can be not limited to 1, can adapt to display effect and determine each mixed proportion, and by being not more than a maximum colour in essence, and this output pixel is also not more than this maximum colour as decision foundation.
Fig. 3 is a colour mixture ratio production method of a kind of image processing system of the present invention, and step 300 captures one according to an index value corresponding to carry out source pixel value; And step 320 is according to this corresponding a part of position carrying out source pixel value, to produce a colour mixture ratio.Wherein, what this was corresponding carry out source pixel value content can be RGB colour, under full color mode (true color mode), generally represent with 8 red values, 8 green values and 8 blue valves, this part position carrying out source pixel value of fechtable is to form a colour mixture ratio, also these part positions can be formed an index value, using as one table look-up according to and produce this colour mixture ratio.
Fig. 4 is a kind of image color-mixture device schematic diagram based on pixel of the present invention, comprising: a colour mixture data generation unit 400, in order to a part of position of the pixel value according to one image/image sources, to produce a mixed proportion; And a blender 440, in order to according to the pixel value of these image/image sources and corresponding mixed proportion, to export an object pixel value.Wherein, this image color-mixture device still can comprise a filler cells 430, in order to fill up this part position of the pixel value of this image/image sources according to a filling algorithm, to deliver to this blender 440.In addition, this image color-mixture device still can comprise a multiplexer 410, one of in order to select a mixed proportion be made up of the part position of the pixel value of image/image sources, and both the mixed proportions utilizing this index value of forming of part position to table look-up to obtain, to deliver to this blender 440; And comparison list 420, inquire about this mixed proportion in order to provide these index values that part position forms.
A mixed-color method used herein can be expressed as:
Output pixel red value=the first pixel red value × mixed proportion+the second pixel red value × (1-mixed proportion);
Output pixel green value=the first pixel green value × mixed proportion+the second pixel green value × (1-mixed proportion);
And output pixel blue valve=the first pixel blue valve × mixed proportion+the second pixel blue valve × (1-mixed proportion).
Therefore, when mixed proportion is 0, represent only display the second pixel; When mixed proportion is 1, represent only display the first pixel; When mixed proportion is greater than 0 and is less than 1, represent the colour mixture data of display two pixel.Therefore, if will with the second pixel of same color with different mixing proportion and the first pixel colour mixture time, the color item of multiple tool same pixel content but different mixing proportion just can be used to reach, or revise mixed proportion content with dynamic conditioning with program and also can reach.In addition, the figure place that above-mentioned each pixel and each colour adopt, also can be adjusted because demand is different from specification, is not limited to 24 and 8.Such as, the red value of the first pixel, green value and blue valve are all 100, and the red value of the second pixel, green value and blue valve are all 200, when mixed proportion is 40%, the red value of output pixel, green value and blue valve are then all 160 (i.e. 100x40%+200x (1-40%)).Therefore, if mixed proportion is respectively 100%, 75%, 50%, 25% and 0% in different time, then the color content of output pixel can gradually change and be become the color content of the second pixel from the color content of the first pixel, in change procedure, output pixel on manifesting as the first pixel and the second pixel to overlap one piece in various degree.
For example, Fig. 5 A and Fig. 5 B is in order to illustrate adjustable color mixing method based on pixel of the present invention and color-mixture device.If one first index value is the string of binary characters (such as 00000001) of one 8, then can obtain one first to a color item with same index value (such as 00000001) of a memory element (such as a color table of comparisons) and a colour mixture data generation unit according to this first index value and carry out source pixel value (such as the rgb pixel value of an A image), and first carry out source pixel value according to this and obtain one first mixed proportion α 1.Wherein, this first mixed proportion α 1can as shown in 5A figure, by directly reading from the mixed proportion field being stored in this color contrast table color item, also can as shown in 5B figure, formed by this first a part of position carrying out source pixel value, such as, represent the first mixed proportion α with the numerical value of minimum each 1 position composition representing RGB colour (RGB color value) 1(such as RGB lowest order is respectively " 100 ", for metric " and 4 ", proportion is 50% of three position greatest combined numbers 8, therefore α 1be 0.5); And still can equally as shown in 5B figure, first carry out a part of position composition value of source pixel value as one second index value by this, by another indirectly the process of tabling look-up obtain this first mixed proportion α 1, and the first mixed proportion value being stored in this required table of comparisons of indirectly tabling look-up still changes numerical value by sequencing with dynamic and high resilience.Then, as this first mixed proportion α 1after obtaining, one second mixed proportion α can be obtained according to this 2.Wherein, this second mixed proportion α 2by by the first mixed proportion α 1subtract each other and take absolute value with 1 again and obtain, then by a blender, the pixel value of multiple image/image sources and corresponding mixed proportion are multiplied and add up, to export and to show the object pixel value after a colour mixture.
In addition, the present invention can also do multiple application.Such as, adjusting mixed proportion by changing pixel content, by the output pixel of a specific region to fill up according to the color that mixed proportion is descending for several times, just can reach the effect being become the second pixel gradually by the first pixel.This color mixing method also can be used for showing captions, menu list, or with translucent mode superimposed image, allows user can see two complete picture simultaneously.The method is the mixed proportion not needing to input each output pixel, utilize the pixel value content described in amendment table of comparisons color, just can increase the elasticity in colour mixture, and can solve when display frame scope larger its for storing and receiving the cost of mixed proportion by also larger problem.Such as, when with 8 (1 bytes), each mixed proportion need represent that an indication range is the picture of 1024x768, may need first by 786, transmit again after 423 hytes store, and adopt the framework of pixel value part bit representation mixed proportion that utilizes of the present invention can save huge storage area and cost.
The foregoing is only preferred embodiment of the present invention, and be not used to limit protection scope of the present invention; All other changes for the equivalence completed under the disclosed spirit of disengaging or modifies, and all should be included in the scope of claims.

Claims (6)

1. the adjustable color mixing method based on pixel, is characterized in that, comprise step:
Obtain one first according to one first index value and carry out source pixel value, and according to this first come source pixel value obtain one first mixed proportion, wherein, first source pixel value is carried out by finding a memory element one color entry index value identical with this first index value to capture this;
According to this first contribution calcutation one second mixed proportion; And
First source pixel value and this first mixed proportion is come according to this, and a second source pixel value and this second mixed proportion, calculate an output pixel,
Wherein, form this first mixed proportion with this first a part of position carrying out source pixel value, or form one second index value with this first a part of position carrying out source pixel value, obtain this first mixed proportion to table look-up.
2. the adjustable color mixing method based on pixel as claimed in claim 1, wherein, comprising:
Fill up this first this part position carrying out source pixel value, to reply this first form carrying out source pixel value.
3. the adjustable color mixing method based on pixel as claimed in claim 1, wherein, comprising:
The pixel mixed proportion in this first source is dynamically changed with sequencing.
4. the adjustable color mixing method based on pixel as claimed in claim 1, wherein, calculates this output pixel and comprises:
Calculate this first mixed proportion and this first to carry out source pixel value long-pending;
Calculate this first mixed proportion and 1 difference and this second source pixel value long-pending; And
Calculate the summation of each product term, using as this output pixel.
5. the image color-mixture device based on pixel, is characterized in that, comprising:
One colour mixture data generation unit, in order to a part of position of the pixel value according to one image/image sources, to produce a mixed proportion;
One blender, in order to according to the pixel value of multiple image/image sources and corresponding multiple mixed proportions, to export an object pixel value; And
One multiplexer, in order to this mixed proportion selecting this part position of the pixel value of this image/image sources to form, and the index value utilizing this part position to form is tabled look-up one of both mixed proportions of obtaining, to deliver to this blender.
6. the image color-mixture device based on pixel as claimed in claim 5, wherein, comprising:
Comparison list, inquires about this mixed proportion in order to this index value providing this part position to form.
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CNB2004100038931A Expired - Lifetime CN1272963C (en) 2003-05-23 2004-02-10 Method for selecting interleaving-removing algorithm of dynamic image
CNB200410033536XA Expired - Lifetime CN1302373C (en) 2003-05-23 2004-04-06 Method for sharing color reference table and device for pattern sample memory
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